DISEASES OF SWINE AND OTHER ANIMALS. 



89 



Stomach : Full ; contents moderately acid. Sliows tlie usual broAvnisli discoloration 

 of the raucous nicuibrano covering the great curvature. 



Small intestines : Show only a few patches of congestion. The follicles of Peyer's 

 patch just above the ilio-caecal valve arc considerably enlarged. 



Lar<je intestines: Show a great many enlarged solitary glands, yet but little conges- 

 tion. The rectum is much congested and presents two ulcers: one with raised edges 

 and raw, depressed center ; the other, with a firm, dirty-white slough in the center. 



Mesenteric lymphatic (jlands : Enlarged and thickly streaked with gray. Those near 

 the ilio-CiBcai valve, and those a])ove the rectum, are congested and deeply reddened. 



Inguinal f/lands: Are also greatly enlarged and streaked dark-gray with i^igment. 



Liver: Oi" normal consistency and color, excepting some few patches of deep pui-ple. 

 Gall-bladder moderately filled with a yellowish-green, viscid bile. 



Pancreas: Healthy. 



Sjjleen: A portion very dark colored (nearly black) extending its whole length and 

 about half its breadth ; is evidently gorged with blood ; but is not raised above the 

 level of the remaininj^ iiart. 



Kidneys : One contains an acephalocyst in itsiielvis. The cortical substance of both 

 is pallid, l)ut no other change is noticeable. 



'Tlie lungs, heart, and brain appeared healthy. 



EXPERIMKNT No. 12. 



Male pig, eight weeks old ; breed, Chester White. 



Post-mortem examination. — tSlin : Of ears, throat, breast, belly, and legs, of a uniform 

 dark i)uii>le ; vrhite patches remain inside the foreann and thigh, and along the back, 

 which is covered by a very thick scurf. The discoloration which is due to congestion 

 of capillary vessels, the coagulation of blood within them, and numerous minute ex- 

 travasations, is conline<l to the integument. The skin is also abundantly covered 

 with the usual black concretions. 



Digestive organs : Tongue blue, but with no abrasions. 



Tonsils, fauces, and pharynx: The seat of general congelation and discoloration. 

 CT'^sophagus has some spots of slight congestion. 



Stomach: Di.stended with solid food; not so strongly acid as in many other case.". 

 Its great ctirvaturo has the mucous membrane covered with patches of blood extra- 

 vasation, such ])atches standing out in greater p;u't as dark-red clots. 



Smallintestine: Exceedingly contra.'ted, almost empty, and congested throughout 

 in varying degree, from a simple In-anching redness, with softening of the mucous 

 membran(» and excessive ])roductioii of mucus, to distinct circumscribed extravasa- 

 tions witli decided thickening; in several instances the redness and the thickening 

 is m<ist marked on Peyer's patches. The duodenum contains tliree ascaridcs. Several 

 sm.nll ulceis exist just above the ilio-circal valve. 



Large intestine: Ciccum remarkably small and contracted. Neither canium nor colon 

 conlains much ingesta. The nnieous juciiibr.'uic along the wlic)]<! hii'ge intestine is in- 

 llanicd, greatly thickened by exudation, and thrown into prominent circular folds. 

 Its general color is of a dark brownish red, in many ])oints verging upon black. At 

 ditf(;rent points it shows the characteri.stic ulcers with a linn, dirty, white slough in 

 the (('nter of cacli, but these have in no case attained a larger size, nor any marked 

 thickening nor induration of their base, and without special care in the examination 



